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I have telemetry (every checkbox under "Firefox Data Collection and Use") disabled, but noticed that the datareporting/archived directory contains telemetry files. Is this expected, or does this indicate a bug that shows that telemetry is being sent?

The file paths have the format:

<profile dir>/datareporting/archived/2025-09/<unixtimestamp>.<uuid>.main.jsonlz4 <profile dir>/datareporting/archived/2025-09/<unixtimestamp>.<uuid>.events.jsonlz4

I am on endeavourOS (linux). Whenever I try to upload images for a profile picture to sites like youtube or X, the image becomes corrupted and doesn't upload correctly. It did this with whatsapp too and I had to use a separate app for it. Other posts said that disabling "privacy.resistFingerprinting" would fix it, but it's already disabled.

Attached below are an example of this bug and the contents of this image when viewed on a text editor.

Problem: Persistent 150 KB of Cached Web Content For several years, I have gone to “Settings” / “Privacy & Security” / “Cookies and Site Data,” clicked the Clear Data…” button, checked both “Cookies and Site Data,” and “Cached Web Content,” and clicked “Clear”, and consistently gotten BOTH “Cookies and Site Data,” and “Cached Web Content” down to “0” zero. Recently, I have been unable to “Cached Web Content” to go below “150 KB of disk space.”

         I have NOTHING listed in “Manage Cookies and Site Data” or “Exceptions -- Cookies and Site Data.”
         I have tried reinstalling, but the problem has persisted.
         On the assumption that this is malware problem, I have continued to use Mozzella VPN, but stopped using the program for browsing, etc.  Should I stop using it altogether until the problem is fixed?
         Can you tell me how to get rid of the last “150 KB” of “Cached Web Content”?

Now that Mozilla/Firefox have joined Google on the dark side, who is everyone switching to? I would like something that works well in both Windows and android. I hear Opera can't be trusted and I don't like how there are like 6 difference versions of Opera in the android app store. DuckduckGo is just badly made IMO. Edge causes some glitches with one of the sites I use most. Should I try Brave? I just want a browser to BROWSE the web. I don't want AI. I don't need a VPN or adblock built in. I don't want a "gamer" browser. A decent local password manager would be nice but I don't want to have to make an account to use it. I know if the product is free, you are the product, so I would almost prefer a browser you pay for but oddly that doesn't seem to be a popular option. Probably because the user data the companies collect makes them more money then people would be willing to pay. Sad times. I miss the 90's.

I want to create a list of allowed web sites in settings/cookies&data/manage exceptions, but it seems I have to enter each site MANUALLY. I would like to do this more quickly and easily by just selecting sites in the "manage cookies" list and designating them as exceptions. Or is there already some other way to do this that I haven't found? Also, after I have made exceptions for all my important sites, by whatever means, can I assume that I can press "delete all" in the "manage cookies" list and the allowed sites will not have cookies removed? What happens to exceptions if I select "delete cookies and site data when Firefox is closed?" If there is no way to make exceptions other than manually, I respectively request that some convenient method be added to the program. Thanks for any response.

It has been working fine - now I get this message:

'We've detected a problem with your cookie settings. Enable cookies

Make sure your cookies are enabled. To enable cookies, follow these browser-specific instructions. Clear cache and cookies

If you have cookies enabled but are still having trouble, clear your browser's cache and cookies. Adjust your privacy settings

If clearing your cache and cookies doesn't resolve the problem, try adjusting your browser's privacy settings. If your settings are on high, manually add www.google.com to your list of allowed sites. Learn more'

I've tried making Google an exception, to no avail.

I got an email supposedly from breach-alerts@mozilla.com that claims there are currently 3 data breaches and has this link to resolve: https://blrv1ly5.r.us-west-2.awstrack.me/L0/https:%2F%2Fmonitor.mozilla.org%2Fuser%2Fdashboard%2Faction-needed%3Futm_source=monitor-product%26utm_medium=product-email%26utm_campaign=monthly-report-free-us-scan-no-exp-yes-breach-resolved-no%26utm_content=resolve-exposures-us/1/01010195ceba1024-6e3f74fe-119a-4e2e-9033-398671a830d9-000000/DDeGOTLjROOXCCk2fJvXJbdefc4=419

This seems like a phishing email, is it legit? Should I find another browser?

Having spent a frustrating weekend being unable to log into Coventry Building Society's online banking app, I phoned them this morning to be told they consider Firefox insecure and no longer support its use. The app accepts my username & password, tells me they are going to 'phone me with an access code' and then displays "Page not found". Anyone know of any other bank or similar who would believe Firefox to be insecure?

I have a question about using Firefox PDF Editor. I copied some text from a PDF document that is on my computer, by highlighting the text and then hitting Ctrl+C. The text copied onto my clipboard OK. Then I opened a blank PDF document in the Firefox PDF Editor and tried to paste that text into the blank document, but I wasn't able to do so because when I right-clicked on the blank document and then clicked on "paste", nothing happened. This apparently is because the word "paste" is faded-out in the drop-down menu (i.e., it does not appear in prominent bold print). Google's Artificial Intelligence seems to indicate that the technique I used would work (see screenshot which I've uploaded). But it didn't work, so can anyone please tell me how can I paste text into that blank document?

When we log into our Yahoo email, there's a small triangle (see screen shot) next to the padlock on the address bar that says "connection not secure".

Not sure what to do to get rid of it.

Issue summary: I lost over 100 sites listed in the Cookies and Site Data section when I simply removed a few websites in the Enhanced Tracking Protection section.

Under the Browser Privacy section, the two subheads, "Enhanced Tracking Protection" and "Cookies and Site Data" serve two distinct purposes—as I understand. Enhanced Tracking Protection will automatically add the URL of a webpage (that you currently have open) to the Enhanced Tracking Protection screen whenever you disable the shield in the search bar. This will turn off tracking for that website until turn you it back on. You can also manually add websites to the Enhanced Tracking Protection screen if you have mulitples to add. This whitelist will stay active until you delete them or click on the shield to turn it back on.

The Cookies and Site Data section further down, allows you to create a list of sites that you want to BLOCK, ALLOW FOR SESSION, or ALLOW cookies and site data to be used, and retained or not. This differs from the Enhanced Tracking Protection section.

Today, I wanted to delete one of the websites listed in the Enhanced Tracking Protection, and did so manually. But since there were only a couple listed (I rarely add to this screen), I simply clicked on "Remove All Websites" instead of "Remove Website." Unfortunately, when I went down to the Cookies and Site Data list (which I use all the time) to add a new URL today, my entire list was gone! I did not remove or enter anything in the Cookies and Site Data screen today, prior to using the Enhanced Tracking Protection screen.

As you can guess, I am sick because I had over 100 sites listed in the Cookies and Site Data section, and lost them all when I removed the few websites in the Enhanced Tracking Protection section. I don't know why or how this happened, but it is worth noting that I did just update Firefox this morning to vs 125.0.2 (from 124.0.2). My list is gone, but does anyone have a reason why it happened and is there a way to prevent that in the future? Or is it some kind of bug with the latest release or an earlier one. (I haven't opened the Enhanced Tracking Protection screen for a long time, so it could be from any past release.) Sorry I don't have more info than that. Any solutions would be appeciated.

Hi I recently was hacked unfortunately due to a stupid screw up involving a person who had hacked a friend's account and had me download some malware disguised as a "game he worked on" and managed to get all my passwords stored in Firefox (spent 9 hours straight changing all 200 of them and wiping the laptop). I believe I am misinterpreting some things on how secure the storage of passwords are for Firefox as I thought using the "Primary Password" function would encrypt everything properly. The hacker proved he had them unencrypted sending some examples to me to flaunt.

Was he able to attain access to the passwords due to me already having firefox open when I was compromised (even if the primary password is asked before entering each password?) Or is there some issue with firefox not storing them properly? Or is there some other less know issue with windows or edge or something "stealing" the passwords and storing them in an unencrypted file without me knowing?

This whole thing makes me feel less trustful of firefox to say the least and while the hack itself was my fault I just want to know if there was something else I could have done other than using keepass or some other password manager to exclusively store passwords (which is what I am going to do now and probably should have been doing)

TLDR - Primary password did not stop hacker from seeing passwords - Any clarification on whether this was my fault in trusting it for such things or if there is an actual issue with firefox's approach

Thanks for any help or clarification.

I have all options enabled to save addresses and credit cards.

When I try to manually add a credit card, hitting the Save button does nothing.

When I use a credit card on a site, Firefox prompts me to save the card, I confirm that I want to save it, yet it isn't saved.

I don't want to use passkeys, and it seems that every site is checking browser support and wasting my time with passkey prompts before allowing me to log in with a password. How do I disable passkey support in Firefox?

When I visit the web site virtueonline.org using Firefox browser, the Disqus comment section does not appear below articles on the site. Sometimes, when I go in and out of the article, the Disqus comment section will appear, but not always. When I use Microsoft Edge, the Disqus comment sections appear.

Firefox 125.0.1 update breaks all self signed certificates

After the latest auto update I can no longer access any of my management screens on my private network with self signed certificates. This is a real problem. I have attached a couple error screen grabs, but ALL of themn are the same. The information link says there is no workaround!

So how do I recover access? Chrome works just fine ... so it is def. a Firefox problem.

Attempting to upgrade and recommission an old HP laptop not used in several years. Currently running Firefox Version 41.0.1

Any queries to legitimate websites such as Google or Mozilla, return a "This Connection is Untrusted" display screen. Firefox security settings have been changed to lowest security, and problem persists.

It isn't that Firefox isn't reaching the websites... it's that some security setting recognizing the security certificates (like Mozilla's) is broken... and I can't get past it... even to be able to download a new browser version.

Hi, Firstly I apologize because I'm not very tech savvy. My firefox browser has been taking ages to load. I've tried various 'fixes' over the last week or so and they don't work for long. I'm going down the 'try this' list and am at the 'clear junk in manage data' suggestion. Someone else had success with getting rid of a load of youtube saved junk. I'm in the Cookie and Site Data area, it says it's using 793mb of disc space yet when I tap on 'manage data' to try and clear stuff that area shows up as empty. I've searched but can't locate how to fix this issue. Or I might be missing something completely obvious. :/

My memory, and health, is not great so if possible I really don't want to resort to clearing everything and having to re-add log ins etc.

Does anyone know how to fix this please?

Thank you!

My FF version 126.0.1 browser history file size is stuck at 10,240 KB. Until recently it was 54,000 KB and change. I would like to get it larger. I've tried all the recent help postings relating to places.history.expiration.max_pages, places.history.expiration.transient_current_max_pages, browser.history_expire_days, browser.sessionhistory.max_entries or browser.sessionhistory_max_entries, and so on. Nothing seems to be able to change the "places" file size. Anyone have any more info on this topic?